Crosslinkers contain reactive ends to specific functional groups, such as primary amines and sulfhydryls on proteins and antibodies, enabling the covalent joining of or two or more biomolecules. Homobifunctional crosslinkers have the same reactive chemistry at both ends and heterobifunctional have different chemistries at each end. PEGylated crosslinkers have enhanced solubility, increased stability, reduced aggregation, and reduced immunogenicity. Use our crosslinker selection tool to find the optimal reagent for your protein function or interaction application, or access our helpful Bioconjugation Technical Handbook to help improve your crosslinking results.